Final answer:
The largest and most well-known day for the Irish is St. Patrick's Day.
Step-by-step explanation:
The largest and most well-known day for the Irish is St. Patrick's Day.
St. Patrick's Day is celebrated on March 17th each year and commemorates the patron saint of Ireland, Saint Patrick. It originated as a religious holiday but has evolved into a celebration of Irish culture and heritage.
Cities around the world hold parades, festivals, and events on St. Patrick's Day, with the largest parade taking place in New York City. It is a day when people wear green and participate in various cultural activities, such as Irish music, dancing, and traditional food.